WO1998056057A1 - Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes - Google Patents
Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes Download PDFInfo
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- WO1998056057A1 WO1998056057A1 PCT/US1998/008394 US9808394W WO9856057A1 WO 1998056057 A1 WO1998056057 A1 WO 1998056057A1 US 9808394 W US9808394 W US 9808394W WO 9856057 A1 WO9856057 A1 WO 9856057A1
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- WIPO (PCT)
- Prior art keywords
- γëñ
- rechargeable battery
- lithium aluminum
- capacity
- ion rechargeable
- Prior art date
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- -1 Lithium aluminum manganese Chemical compound 0.000 title claims abstract description 8
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 25
- 230000002687 intercalation Effects 0.000 claims description 9
- 238000009830 intercalation Methods 0.000 claims description 9
- 230000001351 cycling effect Effects 0.000 abstract description 18
- 239000000463 material Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 239000011572 manganese Substances 0.000 description 8
- 238000006467 substitution reaction Methods 0.000 description 7
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 229910014549 LiMn204 Inorganic materials 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 4
- 229910052596 spinel Inorganic materials 0.000 description 4
- 239000011029 spinel Substances 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical class FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052566 spinel group Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910006557 Li1+xMn2 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Inorganic materials [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- QEXMICRJPVUPSN-UHFFFAOYSA-N lithium manganese(2+) oxygen(2-) Chemical compound [O-2].[Mn+2].[Li+] QEXMICRJPVUPSN-UHFFFAOYSA-N 0.000 description 1
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/40—Alloys based on alkali metals
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/006—Compounds containing, besides manganese, two or more other elements, with the exception of oxygen or hydrogen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/12—Manganates manganites or permanganates
- C01G45/1221—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof
- C01G45/1242—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof of the type [Mn2O4]-, e.g. LiMn2O4, Li[MxMn2-x]O4
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/582—Halogenides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/77—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by unit-cell parameters, atom positions or structure diagrams
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M4/1315—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx containing halogen atoms, e.g. LiCoOxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/40—Alloys based on alkali metals
- H01M4/405—Alloys based on lithium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to lithium manganese oxide intercalation compounds useful as active electrode materials in Li-ion rechargeable batteries and, particularly, to oxy- fluoride complexes of aluminum-substituted manganese oxides and their use to improve the cycling stability and capacity of such batteries .
- Lithium manganese oxide intercalation compounds nominally LiMn 2 0 4
- LiMn 2 0 4 Li-ion electrolytic cells and composite batteries.
- Successful batteries of this type are described in U.S. Pat. Nos. 5,296,318 and 5,460,904. These batteries exhibit an admirable level of electrical storage capacity and recharge cycling stability over a wide range of voltages; however, these properties have not been considered entirely satisfactory to meet the increasingly stringent requirements of modern electronic equipment and applications.
- the anionic substitution with fluorine in lithium manganese oxide cell electrode intercalation materials is effective in improving the performance not only of materials obtained with the basic-structured LiMn 2 0 4 and its transition metal-substituted complexes, but also materials derived from cationic aluminum substitution for manganese in the spinel, particularly with respect to high-temperature cycling stability.
- Intercalation materials that may be effectively employed in the present invention to achieve the noted improvements over prior electrolytic cells are represented in the general formula, Li 1+x Al y Mn 2 _ x _ y 0 _ z F z , where x ⁇ 0.4, 0.1 ⁇ y ⁇ 0.3, and 0.05 ⁇ z ⁇ 0.5.
- Preparation of these advantageous aluminum- substituted oxy-fluoride spinel derivatives may most simply follow the usual practice, such as noted in Tarascon, U.S. 5,425,932 and earlier-mentioned Amatucci et al . , of annealing at about 800°C stoichiometric mixtures of appropriate precursor compounds, typically A1 C0 3 , Li 2 C0 3 , LiF, and Mn0 2 .
- the cells were subjected to repeated charge/discharge cycling to determine the effect of compound constitution on the level of electrical storage capacity exhibited by the cells, generally as mAhr/g of electrode compound, as well as on cycling stability, i.e., the ability to maintain the initial level of capacity over extended cycling, not only at room temperature, but on into a high-stress temperature range up to about 55° C.
- cycling stability i.e., the ability to maintain the initial level of capacity over extended cycling, not only at room temperature, but on into a high-stress temperature range up to about 55° C.
- intercalation materials of the present invention as well as comparative samples of prior Al-substituted and unsubstituted compounds, were prepared in the manner described in the aforementioned U.S. 5,425,932, using stoichiometric mixtures of the primary precursor compounds, and were tested as active components of positive secondary cell electrodes.
- Test cells of the samples were prepared and tested in galvanostatic and potentiostatic studies, generally as described in that patent specification. Such test cells comprised lithium foil negative electrodes as a practical expedient, since experience has confirmed that performance results achieved in this manner are objectively comparable to those obtained with Li-ion cell compositions described in the other above-noted patent specifications .
- the mixture was heated at a regular rate over a period of about 12 hours to a temperature of 790° C at which it was maintained for about 12 hours .
- the sample was then cooled to room temperature at a regular rate over a period of about 24 hours.
- the sample was reheated over a period of 5 hours to 790°C where it was held for about 12 hours before being finally cooled to room temperature over a period of about 24 hours.
- the resulting aluminum manganese oxy-fluoride compound was characterized by CuK ⁇ x-ray diffraction (XRD) examination which showed clearly-defined peaks confirming a well-crystallized, single-phase product of the synthesis.
- the resulting samples were characterized by XRD from which the respective a-axis lattice parameters were calculated.
- the resulting samples were characterized by XRD from which the respective a-axis lattice parameters were likewise calculated.
- a plot of these latter parameter dimensions as shown in FIG. 1 indicates the regular increase which tracks and is indicative of the increase in fluorine substitution.
- the materials of the invention exhibit a-axis dimensions well within the desirable range of less than about 8.23 A.
- Portions of the samples of Li 1 0 Al 0]1 Mn 1 _ 9 O 4 _ z F z , where z varies at 0, 0.2, 0.3, and 0.4, prepared in Example 2 were individually incorporated with about 10% conductive carbon and 5% polyvinylidene fluoride binder and cast from a solvent vehicle on an aluminum foil substrate to provide upon drying, preferably in a nitrogen atmosphere, positive test cell electrodes.
- the sample electrodes Arranged in the usual manner with a lithium foil electrode and intervening glass fiber separator saturated with a 1 M electrolyte solution of LiPFg in a 2:1 mixture of ethylene carbonate : dimethylcarbonate, the sample electrodes formed test cells which were subjected to room temperature charge/discharge cycling over the range of 3.4 - 4.5 V at a C/5 rate (full cycle over 5 hours) .
- the capacity of each cell was traced during a period in excess of about 130 cycles to provide an indication, as seen in FIG. 2, of the extent of change of that property, i.e., the cycling stability of the cell, with protracted recharging.
- Traces 21-24 reflect the results from the above- noted increasing levels of fluorine substitution, z, from 0 to
- test cells respectively comprising a preferred Li 1 05 Mn 1 95 O compound used in prior cells and the Li 1 0 Alo. 2 Mn ⁇ . 8 ( - ) 3 . 5 F o. 5 electrode material of Example 4 were subjected to extended cycling at about 55° C, a temperature at which noticeable degradation of cell performance is commonly observed. Results of these tests appear, respectively, in FIG. 4 as traces 41 and 42, along with the earlier-depicted room temperature trace 43 of the same invention material. As is apparent, the present invention material maintains a higher degree of both capacity and cycling stability over the broad range of temperatures normally experienced in rechargeable battery usage.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19997011287A KR20010013293A (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes |
AU71625/98A AU724063B2 (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes |
JP11502401A JP2000513701A (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxyfluoride for electrodes of lithium ion batteries |
IL13269398A IL132693A0 (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxy-fluorides for li-ion rechargeable battery electrodes |
EP98918761A EP0986831A1 (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes |
CA002290568A CA2290568A1 (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/868,553 | 1997-06-04 | ||
US08/868,553 US5759720A (en) | 1997-06-04 | 1997-06-04 | Lithium aluminum manganese oxy-fluorides for Li-ion rechargeable battery electrodes |
Publications (1)
Publication Number | Publication Date |
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WO1998056057A1 true WO1998056057A1 (en) | 1998-12-10 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/008394 WO1998056057A1 (en) | 1997-06-04 | 1998-04-24 | Lithium aluminum manganese oxy-flourides for li-ion rechargeable battery electrodes |
Country Status (11)
Country | Link |
---|---|
US (1) | US5759720A (en) |
EP (1) | EP0986831A1 (en) |
JP (1) | JP2000513701A (en) |
KR (1) | KR20010013293A (en) |
CN (1) | CN1258383A (en) |
AU (1) | AU724063B2 (en) |
CA (1) | CA2290568A1 (en) |
IL (1) | IL132693A0 (en) |
TW (1) | TW367305B (en) |
WO (1) | WO1998056057A1 (en) |
ZA (1) | ZA984694B (en) |
Cited By (2)
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US6248477B1 (en) | 1999-09-29 | 2001-06-19 | Kerr-Mcgee Chemical Llc | Cathode intercalation compositions, production methods and rechargeable lithium batteries containing the same |
EP1136446A2 (en) | 2000-03-24 | 2001-09-26 | MERCK PATENT GmbH | Coated lithium-mixed oxide particles and method for preparation |
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US5759720A (en) * | 1997-06-04 | 1998-06-02 | Bell Communications Research, Inc. | Lithium aluminum manganese oxy-fluorides for Li-ion rechargeable battery electrodes |
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US20060147369A1 (en) * | 1997-07-21 | 2006-07-06 | Neophotonics Corporation | Nanoparticle production and corresponding structures |
US5932374A (en) * | 1997-12-04 | 1999-08-03 | Telcordia Technologies, Inc. | Lithium magnesium manganese oxy-fluorides for Li-ion rechargeable battery electrodes |
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US5639438A (en) * | 1995-12-06 | 1997-06-17 | Kerr-Mcgee Chemical Corporation | Lithium manganese oxide compound and method of preparation |
US5674645A (en) * | 1996-09-06 | 1997-10-07 | Bell Communications Research, Inc. | Lithium manganese oxy-fluorides for li-ion rechargeable battery electrodes |
US5718989A (en) * | 1995-12-29 | 1998-02-17 | Japan Storage Battery Co., Ltd. | Positive electrode active material for lithium secondary battery |
US5759720A (en) * | 1997-06-04 | 1998-06-02 | Bell Communications Research, Inc. | Lithium aluminum manganese oxy-fluorides for Li-ion rechargeable battery electrodes |
-
1997
- 1997-06-04 US US08/868,553 patent/US5759720A/en not_active Expired - Lifetime
-
1998
- 1998-04-24 WO PCT/US1998/008394 patent/WO1998056057A1/en not_active Application Discontinuation
- 1998-04-24 EP EP98918761A patent/EP0986831A1/en not_active Withdrawn
- 1998-04-24 IL IL13269398A patent/IL132693A0/en unknown
- 1998-04-24 CN CN98805616A patent/CN1258383A/en active Pending
- 1998-04-24 KR KR19997011287A patent/KR20010013293A/en active IP Right Grant
- 1998-04-24 CA CA002290568A patent/CA2290568A1/en not_active Abandoned
- 1998-04-24 JP JP11502401A patent/JP2000513701A/en active Pending
- 1998-04-24 AU AU71625/98A patent/AU724063B2/en not_active Ceased
- 1998-06-01 ZA ZA984694A patent/ZA984694B/en unknown
- 1998-06-04 TW TW087108839A patent/TW367305B/en active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6248477B1 (en) | 1999-09-29 | 2001-06-19 | Kerr-Mcgee Chemical Llc | Cathode intercalation compositions, production methods and rechargeable lithium batteries containing the same |
EP1136446A2 (en) | 2000-03-24 | 2001-09-26 | MERCK PATENT GmbH | Coated lithium-mixed oxide particles and method for preparation |
Also Published As
Publication number | Publication date |
---|---|
CN1258383A (en) | 2000-06-28 |
TW367305B (en) | 1999-08-21 |
JP2000513701A (en) | 2000-10-17 |
AU724063B2 (en) | 2000-09-14 |
IL132693A0 (en) | 2001-03-19 |
US5759720A (en) | 1998-06-02 |
EP0986831A1 (en) | 2000-03-22 |
CA2290568A1 (en) | 1998-12-10 |
AU7162598A (en) | 1998-12-21 |
KR20010013293A (en) | 2001-02-26 |
ZA984694B (en) | 1999-03-23 |
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